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Questions tagged [microchip]

Microchip Technology is an IC manufacturer, best known for its extensive range of PIC microcontrollers, but also memory and analog function ICs. The term "microchip" is a legacy term for integrated circuits, not just ones designed by Microchip Technologies. The company came into existence and took the name after the term became common parlance.

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Are there any current methods to microetch semiconductors? [closed]

We can build computers macro size but only big business foundries seem capable of producing and having the privilege of making microchips and better form factor machines. Has technology found any ...
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32 views

Displaying value on 2 line 4 digit 7 segment code [on hold]

I have using arduino Uno . I have used serial in parallel out to display the parameter. Here i am pasting the piece of code. Totally i have 8 digit of 7 segment display.Dissect & Dissect2 split ...
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1answer
15 views

MCP23S17 Interrupt Issue

I am having issues with interrupt setup on MCP23S17. Not able to set up the INTB line properly. I have an external 10K pull up resistor connected to the line and 3 input buttons connected to GPB0 - ...
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2answers
45 views

USB EC vs PIC MCU [closed]

I'm trying to make a peripheral with an embedded USB hub, which will include USB-C 3.1. As I've been researching USB I've found that Microchip has a whole slew of embedded controllers dedicated to USB,...
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117 views

Why does my LM393N (dual comparator) ignore its inputs completely when used with an LED?

I have made the following circuit: Viusalisation (not working): https://i.stack.imgur.com/tDA85.png Circuit (working): simulate this circuit – Schematic created using CircuitLab Left to ...
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24 views

identify ic component - VL7TA

can you please help me to identify this IC? it could be a voltage regulator. it's marked as VL7TA, has 10 pins at the bottom. Please see the pictures below:
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1answer
92 views

Small microcontroller with USB host peripheral [closed]

I'm trying to find microcontroller with low pin coutn that has USB host capabilities. I know this can be done with big PIC24 or PIC33 microcontrollers, but I wonder if there are others chips that ...
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27 views

PIC18F26K22 interrupt INT0

I use to work with PIC18F1320, with nearly all interrupts and it works fine. I have a new project that needs some more pins and I2C. So I decided to use PIC18F26K22 (the board is done). But on that ...
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1answer
40 views

Write collision for multiple reads - PIC24 I2C

I am trying to poll a CAP188 sensor so I'm sending it read commands in a while loop, but the first read works and then on the second read when I send the slave address it detects a write collision. ...
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32 views

Multiple Reads Not working- PIC24 I2C

I'm trying to read from a register on a CAP1188 using my PIC24FJ64GA002 multiple times (will be polling it) and it only reads the correct data once and then on the second read it gets stuck waiting ...
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20 views

eMMC host controller question

i have a eMMC v5.1 chip from Samsung,and i have a emmc controller v4.5 is possible my controller support eMMC this version ? whats eMMC version? lower controller version could support higher version ?...
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Microchip MRF24WN0MB datasheet for use in STM32

We have designed a board where a Microchip MRF24WN0MB WiFi is connected to an STM32L082 ARM micro-controller through SPI. I can generate code with STM32CubeMX (compiled with Eclipse SW4STM32) and run ...
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1answer
48 views

Which UART is used on the Explorer 16 development board with PIC32?

I am trying to use "PIC32mz2048ech100" on "explorer16" to get "UART" communication. Can anyone let me know which uart channel(from 1 to 6)of PIC32 microcontroller is connected to explorer 16.
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79 views

I2C SCL high and SDA low

I have been trying to debug my I2C on the dspic33 and right now I'm not sending anything over the I2C and have it in IDLE mode. I only see the SCL being high and SDA being low. Does this mean that the ...
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2answers
60 views

Am I on the right track with the 16F1704?

I am 100% new to PICs and I know I have a lot to learn. My end goal is to have a DC motor controller that will operate a motor in one direction only and with the push of one button have the motor run ...
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72 views

FIR filter in dsPIC with DSP Library

I have to make a digital filter with a dsPIC30F, but I don't know much about it. I've read part of the documentation about the dsPIC30F and the DSP Library, and I found a page on Microchip website ...
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1answer
56 views

DSP Library not working in MPLAB X

I have to make a digital filter with a dsPIC30F4011 (I'm completely new to microcontrollers). I was reading the documentation about the DSP Library to figure out how to use it. I created a simple C ...
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1answer
70 views

PIC 10F200 MCLR PIN as Output

I need To use MCLR pin to make led blinking using this configuration but I conn't write the code for that
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1answer
50 views

PIC32 data storage in flash change / corrupt

I have some random issue with data saved in flash on PIC32MX470F512L. Since there is no EEPROM, part of the flash storage is used to save configuration and some statistics (ie.: reboots reason, ...
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ENC28J60 rejects unicast packets - unicast filter is on, MAC is set, and addresses match

I'm programming an ENC28J60 driver at the moment, and have encountered something odd when attempting to receive packets. More specifically, unicast packets. According to the datasheet, when the ...
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1answer
57 views

Timer0 not interrupting on PIC18f4321

I'm trying to run some basic code from my textbook onto a PIC18F4321, using the latest XC8 compiler. It's supposed to turn on an LED after 10 seconds, but the LED never turns on. I've checked my ...
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2answers
71 views

Why are different names given to the same bit in MPLAB XC8?

I am using PIC18F45K22 and MPLAB XC8. Recently I stumbled upon something while reading ADCON0 register. A particular bit in the register, GO/DONE has many representations while I try bit addressing it ...
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3answers
62 views

Maximum CPU Frequency of PIC24FJ256GA705 That I Can Get with 8MHz Crystal

I'm used to run PIC24 device family (e.g PIC24FJ256GB) at CPU freq 32MHz using the PLL. Recently I got to use PIC24FJ256GA705 on my new project and when I read the datasheet, I found out that the PLL ...
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1answer
48 views

uploading sketch using mcp2221 to Atmel Mega1284P

Hi I am unable to upload sketch to Atmel mega1284p using a mcp2221 usb to uart converter IC. I have a simple code prints "message received" It works to program the Mega1284p using arduino nano as ISP....
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58 views

i2c bus sniffing and spoofing

Some Background: I am working on an embedded c project for a samd21j18a MCU. The MCU communicates with 2 crypto eeproms on the i2c bus. All the data is encrypted with AES in CCM and additional ...
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I2C stuck on waiting for 8 cycles on DSPIC33ev128

I am new to I2C communication and after reading a number of tutorials on the protocol I attempted to interface a QMC5883L (Chinese Honeywell HMC5883L) to a Microchip DSpic 33ev128gm002 microcontroller ...
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2answers
161 views

Multiplexing LEDs

I’m doing a 16X32 LED matrix system. Controls via a PIC micro controller. The whole circuit is operating from a 5V source. For easy understand I have drawn a single Row/column how my hardware is ...
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2answers
148 views

SPI Flash Memory with ATMega1284

I have connected a SST26VF064B 8Mb flash memory IC to an ATMeag1284 as shown in the following diagram. My plan is to talk to it using SPI. Note that all capacitors in the schema are 100nF. When ...
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1answer
72 views

ATtiny20 ISP, low voltage on MISO

I have been trying for quite some time to program a factory-new ATtiny20. After unsuccesfully trying with a USBASP and with ArduinoISP, I decided to take a look with my scope. Turns out the device is ...
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1answer
66 views

Electronic detector to measure of distance? [closed]

I am not well known about electronic and it is my first question here, beforehand sorry for not qualified question. Let me try to explain what I am looking for: Is there chip or any another ...
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3answers
86 views

What's the first pin of OPA2365?

Usually I recognize the first pin of an IC by observing the small circle and then comparing it with the layout in the datasheet, but in the OPA2365 there is no circle. In the image, is the red arrow ...
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2answers
154 views

How are integrated circuit photomasks fabricated with such high resolution?

I understand that photomasks / photoreticles are used for the fabrication of integrated circuits, CPUs, and such. I also have read that CAD software and languages like VHDL are used to describe the ...
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1answer
50 views

PIC32 UART Reception (Rx) Issue

I am trying to build a very basic communication between PIC32MX274F256D and a laptop through a 3.3v usb to ttl converter. The Transmission of data from PIC32 to serial terminal works fine. The ...
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2answers
72 views

PIC32 custom dev board cannot be programmed

Recently I built my own PIC32MX274F256D development board where I want to experiment. My problem is that the board cannot be programmed. I tried ICD3 and PickIt3 with MPLAB X IDE and IPE. The dev ...
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1answer
50 views

Does MPLAB IDE v8.92 show Page Breaks anywhere in programmer

In the MPLAB assembly code window is their anyway to show or indicate where page breaks are I am using 50 PClath Calls. If I add or remove code it changes the position of page breaks. I would like to ...
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2answers
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Timing a circuit's 'on-cycle' after a push button switch is pressed

First off, thank you for reading all of this - you are the part of the internet that gives me hope for mankind. I’m looking for a circuit that I would think is relatively straightforward, but has a ...
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1answer
52 views

PIC18f46K40 Datasheet/MCC discrepancy

I have found a problem with the PIC18f46K40 datasheet or a problem in MCC - I am using the 44-pin TQFP package. In the datasheet, the pin layout for the PIC18f46K40 is given below: The MCC (MPLABX ...
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1answer
132 views

MCP2210 - Plug n' Play HID Keyboard

I'm working on something at the moment that uses an ESP32. I would like to have simple strings that I can specify within the ESP32 code to automatically "type" on the screen. For example, if I did ...
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1answer
103 views

LAN9500A Ethernet Adapter

I'm designing a USB-to-Ethernet adapter (actually a prototype of a piece of a larger board). As those following my questions will know, I've had some ups and downs getting the USB part working, but ...
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28 views

Using generic tools to program ATF150X series CPLDs from a JEDEC file (understanding JTAG details)

I have a number of ATF1504 44 pin PLCC CPLD devices. I can design for them without a problem to get a JEDEC file. I want to program them via the JTAG ISP interface which has the same pinout as the ...
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1answer
83 views

PWM signals not generating in PIC project

I have bread boarded the following proteus proffessional project: The idea is that the rotary switch controls the speed of the 2 DC fans, the high option results in 100% duty cycle, Med 75%, and Low ...
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152 views

PIC32 and MPLAB Harmony, USART driver

I am trying to output some ADC readings from a potentiometer over USART using the PIC32MX220F032B. I have the hardware all setup and working and i've set up a new project using MPLAB harmony and have ...
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1answer
35 views

Random errors in communication via RFM12B

I am using RFM12B as communication modem with PIC18F4550 on one board as Master board and RFM12B with PIC18F25K50 on two Slave boards. My communication is working but some day when I continue working ...
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1answer
56 views

Midi Timestamp Implementation

I am building a HID USB device (via Microchip PIC MCU) with a MIDI interface, which is functioning as intended (sending midi to the host). My intent is to make it usable by a DAW (such as Reaper), and ...
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1answer
38 views

Touch application with PIC16F183x possible?

I could'nt find any information about touch applications in the datasheet from the PIC16F183x controller. Ist this controller fine for touch applications? It's in a list with supported devices for the ...
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1answer
189 views

Low power sleep with WDT wakeup on PIC32MM

I'm trying to put a PIC32MM0256GPM028 into sleep mode and have it woken up by the Sleep Mode Watchdog Timer (say 1/4 second later- adjustable by SWDTPS anyway). Once it goes to sleep (current drops), ...
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105 views

PIC18F452's timers and interrupts

The PIC18F452 datasheet explains that it has 4 timers: ...
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1answer
59 views

How to program ATmega8U2

I was given an ATmega8U2 chip by my friend and I have been doing a bit of research about it. It says it does not come with a pre-programmed with a boot loader, so I was just interested about how to ...
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1answer
46 views

What is a solution to representing bits physically? (on a cartridge, to be read by the cartridge holder… like a printer)

I am trying to recreate the sort of microchips that are on printer cartridges so that I can make cartridges that can have their data programmed and read? I only need to store 8 bits, so I was thinking ...
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2answers
97 views

Determing when lead acid battery is parallel through embedded systems

I have browsed my fingers out but I just can't get close to what my needs are. I am trying to work out a solution whereby my charger should charge a 200ah lead acid battery at a specific current, ...